Mounting device



Oct. 25, 1932. o. SWANSON MOUNTING DEVICE Filed Nov. 8. 1930 Patented061.25, 1932 PATENT, OFFICE 0130! swnnson, or cnrcneo, rumors IOUNTINGDEVICE Application filed November This invention relates to mountingdevices more particularly for gauges or the like. The inventionfindsparticula'r service in I connection with pressure gauge holders em-B ployed withsteam powerv plants. On locomotives and other steam powerplants for instance, it is essentialthat the pressure gauges employedshall correctly indicate the pressure of the steam. In order that thecor-- rectness of the gauge indications shall be beyond question, thelawas well ascommon prudence requires that the movedand tested at statethree months. Oneobject of this invention is to produce a gauge holderthat can be'permanently conintervals of about nected to a gauge bracketand to which the gauge .can readily be appliedor removed. It a furtherobject of this invention to pro.- duce a holderthat can be employed in"connection with'gauges of different sizes and which will hold the gaugefirmly and prevent it from loosening when subjected to vibrations. i I

Another object of the present invention is to provide a mounting devicecontaining spring pressed clamping means in which the pressure of thespring is increased by movea mentolfthe clamping'means into lockedposition and decreased by movement in the opposite direction.

Another object is to provide a mounting device comprising clamping means'so constructed that the clamping parts are mainly between the deviceand an object held thereby and a desirable wedging action is set up whenthe parts are moved into locked'posi tion.

Anotherebj ect is to providefor ample air space betweena gauge and agauge bracket. Still .another'obj'eot is to provide a compact butefli'cient structure which will take up as little room as possibleuponthe gauge bracket. These and other objects are accomplished by meansof the illustrative embodiment of the invention shown in theaccompanying drawing, in- 1which'; 1 1

Fig. 1 is a plan view of my improved holden, showing in broken lines,the outlines of a gauge as applied thereto;

auge shall be re- 8, 1980. Serial 'N0.-494,260..

Fig. 2' is a side elevation of the improved holder with -a ;ga11ge heldin place thereby;

Fig. '3 is asection taken on the line 3-3 of Fig. 1; Fig. 4 shows agroup of gauges held in place by my improved holders and assembled upona. gauge bracket.

Referring to the figures of the drawing, I havesliown, in general, aholder 1 adapted to engage and hold securely in place a gauge or thelike suchas the pressure gauge 2.

The holderl may be mounted, for'instance, upon a gauge bracket 1a asshown in Fig. 4. Rivets 3, passing through appropriately located holesin the holder, are illustrative of means for this purpose.

The holder, which isadapted to be formed largely of a single casting, isprovided at its lower end with outwardly extending arms 4 adapted toengage and support a gauge or the like. In .the illustrativeconstruction, the arms 4 are notched near theirextremities as at 5, in:which notches the flange 6 of the gauge 2 is received. The arms 4 may beconveniently formed as continuations and outthe face of the holder 1does not extend below thegauge. Thearms 4 are ofsufiicient length tohold the gauge away from the face of the holder a substantial distance,preferably of the screw bolt '9, in sliding engagement therewith. v Thescrew bolt) is in threaded engagement withthe screw block 9a which 1sshown integral with the holder 1 and is arranged between the'gauge andthe face of the holder thus affording compactness and strength. Thesliding block 8 is provided with a retaining lip '10 for engaging theflange 6 of theigauge2" and'h'olding the flange between it and thenotches 5 of the arms 4. A three-point support for the gauge is thussufficient. The back of the flange 6 desirably rests against the wall 11of the block 8. The sliding block 8 has the extensions 12 which slideupon the face of the holder 1 between the reinforcingribs 13, thusproviding guiding means for the block and preventing its rotating uponthe bolt 9. Movement of the sliding block 8 upon the bolt 9 is limitedin one direction by a detent shown here as the transverse pin 14projecting through the bolt 9. Movement of the sliding block 8 in theopposite direction upon the bolt 9 is yieldingly resisted by the helicalcompression spring 15 which bears at one end against the sliding block 8and at the other end against the head 16 of the bolt 9. The screw bolt9, which is rotatable in the sliding block 8, may be. screwed in or outof the screw block 9a. A transverse pin 17 passing through the head ofthe bolt 9 provides a thumb-screw construction for convenientlyoperating the bolt manually. When the bolt 9 is screwed into the screwblock 9a and the gauge is in position as shown in Fig. 2. the pressureof the spring 15 upon the sliding block 8 and consequently the pres-sureof the retaining lip 10 upon the flange 6 of the gauge 2 is in creased.Thus the gauge may be quickly clamped in position upon the holder andthe pressure with which it is held may be varied as desired. At the sametime. because of the yielding resistance of the spring clamp,comnensation is secured for the jarring and vibration to which thisstructure is subjected in use. Since the spring 15 is always undercompression. when a gauge is in position. the bolt is continuously undertension and friction is maintained between the bolt and the screw block9a which prevents accidental unscrewing of the bolt by the jarringorvibration common under, service conditions.

When the bolt 9 is screwed into the screw block 9a the resistance of theflange 6 against the retaining lip 10 of the sliding block 8, tends totilt the sliding block 8 and the bolt 9 toward the face of the holder.thus wedging the sliding block 8 between the gauge and the holder.enhancing the strength and stability of the structure when the gauge isin Dosition. To contribute to this wedging effect. the extensions 12ofthe sliding block 8 and their point of bearing on the holder 1 aredesirablv offset from a plane passing perpendicularly through the bolt?)and the bearing point of the retaining lip 10 to a plane nearer the axisof the gauge. This tilting of the bolt 9 tightens the bolt upon thescrew block 9a and further prevents accidental unscrewing of the bolt.

When it is desired to remove the gauge. the bolt 9 may be screwed out ofthe screw block 9a, upon which the pressure of the spring upon thesliding block 8 is released and by reason of the pin 14 the retaininglip 10 may be lifted clear of the flange 6.

So constructed and arranged the gauge may be clamped in position orremoved by a few turns of the thumb screw bolt 9 and at the same timethe gauge is held with complete security.

Since the range of movement of the sliding block 8 may be considerable,it is evident that the holder is adapted to be employed with gauges ofdifferent sizes.

Changes may be made without departing from the invention.

I claim:

7 1. Thecombination with a mountable object; of a mounting devicecomprising rigid supporting arms extending a substantial distance fromthe face of the device; a block slidable between the object and the faceof the device. said block having sliding engagement with the face of thedevice and having a portion for retaining engagement with the peripheryof an object mounted thereon; and means pressing upon the block betweenthe object and the face of the device with the periphery of the objectas a fulcrum to wedge said block therebetween.

2. A mounting device comprising, in combination, a face; a plurality ofrigid supporting arms extending a substantial distance from the face forreceiving the periphery of an object to be mounted; a block slidablebetween the face and the object said block having sliding engagementwith the face and having a portion for retaining engagement withtheperiphery of the object upon its side opposite the supporting arms;another block fixed on the face between the object and the face andbetween the sliding block and the supporting arms; a manually rotatablebolt passing through the sliding block, said bolt havin a head on oneend and having its other end in screw engagement with the fixed blockand a coil spring surrounding the bolt between the head of the bolt andthe sliding block.

3. The structure of claim 2 wherein the sliding block engages the facein a plane transverse to the bolt nearer the fixed block than a planetransverse to the bolt passing through the point of retainingvengagement of the sliding block with the periphery of the object.

4. The structure of claim 2 wherein the slid ing block has a mid-portionthrough which the bolt passes, said mid-portion having a wall againstwhich the object may rest, and the portion for retaining engagement withthe periphery of the object is in the form of a retaining lipoverhanging said wall.

5. The structure of claim 2 wherein the sliding block has a mid-portionthrough which the bolt passes, said mid-portion having a wall againstwhich the object may rest, and

retaining lip overhanging said wall, and wherein the block has a T-shapeportion extending from the said mid-portion, the head of the T havingsliding engagement with the face.

In witness whereof, I hereunto subscribe my name.

0L 0F SWANSON.

